Flex :: AS3 - Inheritance And Factory Method
Mar 22, 2011
My data is of mixed types like String, Array Collection, Boolean. I have to populate the data into appropriate UI component - for example Boolean to check box, Array to List. So we have created a factory class which will return 3 different type of component based on the input argument.
CTextfield -> extends mx.controls.Text
CList -> extends mx.controls.List
CCheckBox -> extends custom.MultiLineCheckBox
MultiLineCheckBox which extends mx.controls.CheckBox and few methods are overridden to bring the multiple line label. [URL]. It works perfect.Am using the MultiLineCheckBox in the entire application wherever I want check Box. Now I went into a scenario where I want check Box instead of MultiLineCheckBox. How to rewrite my CCheckBox to handle MultiLineCheckBox and also default CheckBox? Each of the CCheckBox class has lot of methods init.
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Apr 9, 2011
I've got this issue implementing the Factory method. Following is the snippet of the the main chart class which calls ChartFactory's method to attain the proper object. I Type Cast chartobject so as to be able to call the Show method; I am apprehensive about that as well.
container = new VBox();
container.percentWidth = 100;
container.percentHeight = 100;
super.media.addChild(container);
chartObject = new ChartBase();
[Code] .....
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Jan 5, 2011
Rather than use a hard-coded switch statement where you pass it the string name of a class and it then instantiates the appropriate class, I'd like to pass the actual name of the class to my factory method and have it dynamically create an instance of that class. I thought it would be trivial and am surprised it is not working. I must be missing something quite basic:
sample code:
createProduct(50, "Product1Class");
createProduct(5, "Product2Class");
private function createProduct(amount:uint, productClassName:String):void {
var productReference:Class;
[Code].....
The only thing that may be a little odd (not sure) is that these "products" are actually linked Library items (ie: I have a movieClip in the Library that has a linkage to Product1Class and another to Product2Class both of which extend ProductBaseClass, which in turn extends MovieClip.
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Dec 1, 2009
I have an issue when consuming a web service from a Flex app. In the backend I have a hierarchy, let's say I have an abstract class Fruit, and 2 implementations: Apple and Orange. Fruit has a property, name, Apple has a property color, and Orange has a property radius. Then, I have a service wich returns a collection of Fruit. When I consume it from Flex, this collection returns objects wich type are Fruit, with its name property; but I lose all the properties for the implementation classes (color nor radius). So, the question is, does Flex support inheritance mapping when using web services? If not, is there any workarround?
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Jul 5, 2010
[Code]....
It is not works! When I see in debugger, child have type "Screen2", but "child is Screen" returns false to me (and "child instanceof Screen" too). When I apply compiler key: "-keep-generated-actionscript" I can see Screen2-generated.as and it's contains public class Screen3 extends screens.Screen
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Jul 4, 2011
General information:
I use Flex 4.5
I use FlashBuilder 4
I generate the WSDL using JAX-WS 2.2 (via a GlassFish 3.1 AS)
I want to have a web service that returns a list of clients.
In the Java code, I have a base class for a Client, and 2 extending classes:
public class Client {
public String getName() {
return this.name;
[Code] .....
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Aug 11, 2011
OK, from what I know actionscript in Flex runs asynchronously. I need the ability to run a method in a loop synchronously. Consider this code:
public class CustomerContainer extends VBox
{
public function CustomerContainer ()
{
[Code]....
This is not my exact situation as it is a bit more complicated to explain here. There is an abstract class and several custom view objects derived from it. Some of the views are dependent on others being completed first but I cannot seem to order them in the correct order. TIMERS are not an option. Probably not explaining this correctly.
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Jul 21, 2009
at the moment I've got a (perhaps) requirement for specifying precedence to certain queries within a movie, which will be dealing with the upload of assets through flash to a php backend.
Does anyone have any info, or maybe a pointer in the right direction with regards to how flash deals with the internal URLRequest stack. If that's even how it works.
I may be vastly over simplifying the way flash works, but the only analogy I have is my own exploration into protoyping an AJAX query stack a couple of years ago, where you'd be able to alter the stack ordering depending on request priority as it were.
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Jan 8, 2010
Right now, I've got a switch statement which is being used to create objects based on a string. There are three types of objects which extend an abstract generic object. I should really be using a factory pattern, which I'm figuring out right now. My issue is thus: flexibility of the factory pattern, but right now I'm storing the would-be products in special dictionaries dedicated to their type.
_type1[location] = ArrayOfType1s
_type2[location] = ArrayOfType2s
_type3[location] = ArrayOfType3s
[code].....
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Jul 29, 2009
How do I listen to an event dispatched from non-display-list concrete objects which are created by a singleton factory class?
An example would be where I want to create tweens for objects using a TweenFactoryClass. In my Main.as class I have this:
ActionScript Code:
TweenFactoryClass.instance.tweenMe( myClip, 200, 200 );
then, in my TweenFactoryClass.as, I have:
ActionScript Code:
public function tweenMe( clip:DisplayObject, xLocation, yLocation ):MyTween
{
var tween:MyTween = new MyTween();
[Code].....
I don't know where I should add the listener to be able to hear that event that was dispatched from the MyTween class.
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Feb 9, 2010
say that i have a base class called Base, that is Bindable and has a String property like this:
[Bindable]
public class Base
{
public var msg:String;
[Code]......
where msg is some textInput field. I am getting a message from the compiler that....
Data binding will not be able to detect assignments to "msg"
is there a limitation with data binding to a base class?
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May 24, 2011
[Code].....
getUser was already in UserService.java. I just created getUser2 and it's identical to getUser. When I try to call getUser2, i get the "Cannot invoke method" error. question: Do I need to specify getUser2 in some other file? like in some configuration file? if so, which one and how do I do it.
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Mar 25, 2011
I'm currently making my own shoot'em up game where the player can switch between two player types which will fire their own bullet type in this case, squares and circles. I've setup the player switch function via pressing "space" button (switching between the two player types) and the default bullet type is "squares" and I'm not sure to approach the coding with changing the bullet type to "circles".I've written 2 classes for the bullet and player setup:Player Class: Creates instance of bullet on screen and enables the switch player type function
Bullet Class: Enables bullet properies and bullet types Player Class: Code:function onKeyDown(event:KeyboardEvent):void {if (event.keyCode == 32) //// pressing/holding "space bar" to function
[code]....
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Jul 28, 2010
I have a parent MC (I'll call this mcFrame) on the stage that is essentially a square "picture" frame which I have applied a 'drop shadow' filter to. I have a child MC (I'll call this mcChild) which I have added to the displayList via AS3. This child MC contains a couple of paragraphs of static text.
So here is my problem: The 'drop shadow' filter I applied to the parent MC also appears on the static text (or any other type of content) in the child MC, how do I keep this from happening? To re-word my question? How do I stop the Child MC from inheriting the filters applied to its Parent MC.
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Mar 16, 2009
I'm having trouble getting my inheritance variables worked out. In 'plain English', this is what I want:
base class enemy:
{variable HP;
if(HP<=0){remove instance}[code].....
But when I try to do this, it just gives me some error either about conflicting namespace or about the variable not being defined. I've done stuff like this before in GM and Python, but I don't understand how it's supposed to be done in AS3.
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Sep 29, 2003
i made an example so i can explein the prob better.[code]I am making a class and if have another build in object in it. I what to add a callback to it but the inheritance is not right. I know how the set up inheritance
1) subClass.prototype.__proto__ = superClass.prototype;
2) subClass.prototype. = new superClass;
but its all messed up in my head so I was hoping someone could point me in the right direction on how to get the callback to work with out messing up the LoadVars class too much
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Dec 20, 2009
Is it possible to inherit the objects of a library symbol?Say I have a symbol named Testwith a red rectangle inside of it (defined in the main .fla file) named Member.
Code:
package
{
[code].....
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May 8, 2009
I have three classes (shown below, after the problem description).The first class (InteractiveStrategy) is the main class definition. In there I declare and instantiate two variables, download and upload, both of DataTxRx class.
On instantiation the folowing error pops up>> 1203: No default constructor found in base class strategy:DataTxRx public function Question(){ The second class, DataTxRx does two things only, either to download data or to upload data. As shown in its constructor, if the required parameter 'direction' is equal to DOWNLOAD, it calls the DownloadData() function. Similary, it calls the UploadData() if the required parameter is equal to UPLOAD.
The third class, Question extends the DataTxRx class, but itself has no constructor. However it has other methods(not shown) for adding, modifying and deleting questions anomg others.
package strategy{
import flash.display.Sprite; import flash.events.*;
import strategy.*;
[code]....
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Sep 7, 2011
if I can do this in as3: I got two "Class"es and I want to know if A:Class is inherited B:Class without instantiat any of them?
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Dec 6, 2010
I'd like to create some kind of component's properties inheritance to create generic behaviors in my component.Imagine I work a lot with textfield based components (counters, animated text... and so on), I'd like my artist to custom these components without being scared by the "update" button. Today, when component's code is updated, my artist has to update every flas using these components, and all of them are re-set to original look (if he had customed font color, or font size by duplicating the component instance, everything is set back to the current look of component).
That's why I'd like to know if there is a way for a component to inherit some of its properties and behaviors from another component class ?
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Feb 7, 2011
package
{
import flash.display.Sprite;
public class AbstractTarget extends Sprite [codee]................
And then I have a class called "Target" that extends AbstractTarget...how do I access the __movement property? Do I have to write the getter and setter in my Target class also and override both functions/methods?
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Mar 7, 2011
If you have a method in your base class that is protected, can you override this method in your subclasses?
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Dec 21, 2010
fact: using my setup, a class that inherits from another class does not inherit the parent class' getter/setter methods.
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Feb 13, 2005
I am looking for an example that will show me how to work around the no-multiple-inheritance problems in AS2. I have a class that extends the UIComponent, but I also want to extend the XMLSocket. I've looked and looekd and see no good example for when I'm writing my class.
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Feb 13, 2007
Without being able to modify the prototype chain, is it possible to fake multiple inheritance in AS3?
Say I have three Window classes. One is a DraggableWindow, one is a ScalingWindow, and one is a BorderWindow.
I want to mix and match new subclasses at runtime without having to make tons of new permutations of Window subclass possibilities.
Sure, I can implement these behaviors of the Window class as interfaces, but I would still have to account for all the permutations of interface combinations.
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Nov 9, 2010
I am working on inheritance for the first time. Here is the super class
SetBlank.as
Code:
import flash.text.*;
class SetBlank {
public var _textFieldName:TextField;
public var _defaultName:String;
public function SetBlank(textFieldName:TextField, defaultName:String) {
[Code] .....
I can see the trace function working but the method which sets the text field to blank is now working.
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Dec 13, 2010
My problem is I wish to find the x and y position of certain child objects. however when i try to display these values I am only shown their position when the child is initially added to the stage.Once the child moves due to the parent object moving, visually the child is moving, however when tracing or displaying the childs x position it remains static.Here is an abstracted version of my problem, it is all code based so it should run fine. The problem area is highlighted using comments and you will notice that the child positions in the trace logs do not change.
package
{
import flash.display.MovieClip;
[code].....
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Jul 22, 2011
overriding clone() while creating custom events?I read in the Flex cookbook that we need just in case we want to redispatch this event. Does this exactly means that when we want event to be bubbled up the display hierarchy , at that time our custom cloned event should be dispatched and not the Event object.
second - whats the need of metadata tag -
[Event(name="modelEvent", type="com.abc.data.model.ModelEvent")]
public class LoginModel extends EventDispatcher
I understand we need to extend EventDispatcher in case we want to dispatch evnet from class.. but In what cases i would need to specify the MetaData TAg
Third is.. If i write -- "dynamic customEventClass extends Event".. Is there any use of Dynamic i can make?
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Aug 9, 2010
I am trying to pass a value from the Doc class to* subClass1. This part work fine. subClass1 receives the value and sets an internal variable to the value it got from the Doc class. When I set subCl[code]...
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Sep 30, 2009
I am writing a simple application which communicates with web services a lot So I am listening for success and fault events very often. When service returns a fault, I show an alert to a user saying something like: "Sorry there was a problem with a service, we will try to call it later"
But there is a problem. When user didn't notice an alert, and service is still dead before the second call the alert will be shown again, and again and again (so There will be very many alert objects which is bad)
I want to make alert a kind of singleton. So I am trying to produce a class something like
[Code]...
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